FastenMaster Cortex 2-1/2 in. L Torx Ttap Star Head Deck Screws and Plugs Kit 1 pkThe innovative cortex hidden fastening system for trex decking hides the heads of deck screws with color matched plugs. Cortex hidden fasteners feature a thread design that requires less torque, and a bit designed for extreme pro contractor use. The TTAP head makes it almost impossible to strip the fasteners, and makes removing the screw easy. UPC: 608309429456 Manufacturer Part No: Brand Name: FastenMaster Sub Brand: Cortex Length: 2 1 2 in. Drive